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Firmware 5.00 for the Axe-Fx II has been released. Below are the release notes.

Click here for the complete list of Release Notes for the Axe-Fx II.


5.00 Release Notes:

NOTE: THIS FIRMWARE MAY CHANGE THE SOUND OF EXISTING PRESETS. YOU SHOULD AUDITION ALL YOUR PRESETS AFTER INSTALLATION AND CHECK FOR PROPER OPERATION AND TONE. AN AMP MODEL CAN BE RESET BY TEMPORARILY CHANGING THE AMP TYPE AND THEN CHANGING BACK TO THE DESIRED TYPE. THIS WILL LOAD THE MODEL WITH DEFAULT PARAMETERS.
WHILE THIS UPDATE HAS HAD A SIGNIFICANT AMOUNT OF CHANGES, HOWEVER, THE OVERALL SOUND OF YOUR PRESETS SHOULD NOT BE DRASTICALLY ALTERED. ONLY MINOR ADJUSTMENTS SHOULD BE REQUIRED.

  • Changed USB outputs so that it is always Out 1 L/R and Input L/R rather than whatever is on digital outputs and Input L/R. The Digital Outputs are still selectable but the USB outputs are fixed.
  • Added Block Left and Block Right options to Sidechain Select in Compressor block.
  • Much improved grid modeling in Amp block preamp and power amp stages. New modeling very accurately replicates grid conduction and resulting bias excursion. This results in a more dynamic, thicker and bouncier tone. The power tube grid conduction parameters are exposed to the user in the GUI. The Bias Excursion parameter controls how much the grid voltage droops when the grids conduct. The Excursion Time and Recovery Time parameters control the time constants associated with the excursion.
  • Added dynamics processing to Amp block. A new tab, “DYN”, in the amp block, allows adjusting various parameters of the dynamics processor along with several other parameters related to amp dynamics. The Dynamics parameter controls the amount of dynamics processing and models the interaction between the power amp, power supply and loudspeaker under high power-level conditions. The Dynamics Time parameter (ADV tab) controls the time constant of the associated processing. The Level parameter is duplicated on the DYN page for convenience.
  • Simplified Hi-Frequency Resonance controls in the Amp block. There is now a single HI FREQ control. The value of this parameter sets the “corner frequency” of the impedance rise due to voice-coil inductance (technically this is a “semi- inductance”). The actual impedance seen by the virtual power tubes is then internally calculated based on the transformer and power tube parameters.
  • Typical guitar speakers have a corner frequency between 1 kHz and 2 kHz. This value is preset based on the model but the user can override the value as desired. Many speaker manufacturers publish impedance data for their drivers which can be used as a reference point. Lower values give more midrange emphasis. For convenience, the transformer low-cut and high-cut frequencies are now present on the SPKR page and their influence on the open-loop response is reflected in the impedance graph.
  • Added speaker motor modeling to Cabinet block. This models the effect of high power levels on the tone of the speaker. The Motor Drive parameter controls the relative drive level and, therefore, the intensity of the effect.
  • Improved Enhancer block. The new Enhancer uses multi-band techniques for a much more natural effect. Also, the effect is mono-compatible with no phasing problems when summing to mono. The effect both widens stereo signals and “stereoizes” mono signals. Low-cut and High-cut parameters allow control over the region of influence. Note that it is NOT recommended to use the Enhancer if just using one side of a stereo output as phasing effects may be encountered
  • Improved noise gate. New gate uses dynamic filtering in addition to downward expansion.
  • Reworked nearly all amp models based on new “amp matching” algorithms.
  • Fixed B+ Time Constant in amp block not being transmitted to slave DSP.
  • Fixed Gate Bypass Mode knob bug.
  • Fixed look-ahead delay still running if Compressor block is bypassed.
  • Fixed lost data on MIDI Thru if sending large amounts of data to MIDI In.